HETEROMERA. 561 
TALANUS (p. 821). 
Dr. Horn has been kind enough to forward specimens of the North-American 
‘D. langurinus and T. stenochinus (Lec.) for comparison with the numerous Central- 
American species described in this work. . langurinus is exceedingly close to the 
small, narrow variety of 7. lecontei, but it has the sides of the thorax almost straight 
behind the middle—in 7. lecontei they are always slightly sinuate (this is best seen 
when the thorax is viewed from the side, the marginal carina being much more sinuous 
towards the base) ; it is possible, however, that 7. Jangurinus may vary in this respect. 
TL. stenochinus resembles T. subexaratus, but has a very rugosely punctured head, with 
shallow frontal depression, the thorax and elytra more coarsely punctate, the thorax 
with very acute outwardly-directed hind angles. 
Talanus neotropicalis (p. 322). 
To the localities given, add :—Muxico, Cordova (Sallé), Guadalajara (Flohr). 
The single (2) specimen sent by Mr. Flohr differs from the others in having the 
thorax still more coarsely punctured, and the elytra distinctly striate at the apex ; it is 
perhaps specifically distinct. 
Talanus zneipennis (p. 327). 
To the localities given, add :—Mzexico, Teapa in Tabasco (H. H. Smith). 
Five specimens. Apparently occurs in company with 7. lecontei and 7’. subexaratus, 
both of which have been sent in plenty by Mr. Smith from the same locality. 
PYANISIA (p. 329). 
6. Pyanisia levis. 
Oblong-ovate, convex, dull black. Head densely, finely punctate ; prothorax strongly, transversely convex, 
widest at the middle, the sides rounded, about equally converging in front and behind, and finely 
margined, the marginal carina very narrowly reflexed, the base broadly, feebly arcuate in the middle, 
very feebly sinuate towards the sides, the hind angles obtuse, the anterior angles declivous, rather sharp, 
the surface almost smooth (when viewed under a strong lens exceedingly minute, scattered punctures are 
visible) ; elytra convex, a little flattened on the disc, sometimes depressed along the suture (deeply so at 
the base in some specimens), almost smooth, or, at most, with very indistinct rows of shallow, minute, 
distantly placed punctures, the humeri angularly produced in front; beneath slightly shining, the 
ventral segments very finely, sparsely punctate ; prosternum produced and declivous behind, the apex 
not raised. 
Length 11-15 millim. 
Hab. Mexico, Omilteme and Xucumanatlan in Guerrero 7000 to 8000 feet 
(H, H. Smith), Mochitlan in Guerrero (Baron). 
Sent in abundance from, and apparently peculiar to, Western Mexico. P. levis is 
‘a close ally of P. opaca (coarctata), which occurs at the same localities; but differs 
